Sony has announced the Xperia A2 in Japan, where it will be available for NTT DoCoMo. This is the phone that could potentially be branded as the Z2 Compact if it ships internationally, though it's far more similar to the Z1 Compact in power and size than the Z2. This device appears to be more about offering a more affordable offering than the same device in a smaller package.
The water and dust resistant Xperia A2 has a 4.3-inch display, a 2.2GHz quad-core Snapdragon MSM8974 processor, 2GB of RAM, and 16GB of internal storage supplemented by a microSD card slot. It has a 20.7MP camera on the back, a 2.2MP shooter on the front, and a 2300mAh battery powering it all. The handset will come in five colors: lavender, orange, gray, black, and white.
Source: Sony Mobile Japan